Abstract
Purpose:
To establish the reproducibility of the new rebound tonometer Icare-Pro, and its correlation with the Goldmann Handheld Applanation Tonometer (Perkins) in pediatric patients diagnosed with primary congenital glaucoma.
Methods:
Using both tonometers, the IOP was prospectively determined in 78 eyes of 40 patients with congenital glaucoma examined under anaesthesia (short age: 8 to 88 months). Corneal curvature, central corneal thickness (CCT), and axial length were also measured in each patient.
Results:
There was a good correlation between IOP readings obtained by the GAT and the Icare-Pro (r= 0.796, p<0.001). ICare readings were midly higher than GAT measurements (mean IOP difference -0.36 + 3.95 mmHg, p=0.40). A Bland-Altman plot indicated the 95% limits of agreement between the two methods were 7.4 to -8.1 mm Hg (slope=0.017; p=0.919). In terms of pachymetry, in this group of patients, the two tonometers behaved in a similar way, without correlation observed between IOP measurements and central corneal thickness.
Conclusions:
The new rebound tonometer Icare- Pro shows a high reproducibility and excellent correlation in their measurements with the Goldmann handheld applanation tonometer in children with congenital glaucoma.
Keywords: 568 intraocular pressure •
465 clinical (human) or epidemiologic studies: systems/equipment/techniques